Remove dead code in duplicable.rb

1 files changed, 1 insertions, 120 deletions

diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb
index c78ee6bbfc..265bb7bf48 100644
--- a/activesupport/lib/active_support/core_ext/object/duplicable.rb
+++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb
@@ -1,3 +1,4 @@
+
 # frozen_string_literal: true
 
 #--
@@ -28,96 +29,6 @@ class Object
   end
 end
 
-class NilClass
-  begin
-    nil.dup
-  rescue TypeError
-
-    # +nil+ is not duplicable:
-    #
-    #   nil.duplicable? # => false
-    #   nil.dup         # => TypeError: can't dup NilClass
-    def duplicable?
-      false
-    end
-  end
-end
-
-class FalseClass
-  begin
-    false.dup
-  rescue TypeError
-
-    # +false+ is not duplicable:
-    #
-    #   false.duplicable? # => false
-    #   false.dup         # => TypeError: can't dup FalseClass
-    def duplicable?
-      false
-    end
-  end
-end
-
-class TrueClass
-  begin
-    true.dup
-  rescue TypeError
-
-    # +true+ is not duplicable:
-    #
-    #   true.duplicable? # => false
-    #   true.dup         # => TypeError: can't dup TrueClass
-    def duplicable?
-      false
-    end
-  end
-end
-
-class Symbol
-  begin
-    :symbol.dup
-
-    # Some symbols couldn't be duped in Ruby 2.4.0 only, due to a bug.
-    # This feature check catches any regression.
-    "symbol_from_string".to_sym.dup
-  rescue TypeError
-
-    # Symbols are not duplicable:
-    #
-    #   :my_symbol.duplicable? # => false
-    #   :my_symbol.dup         # => TypeError: can't dup Symbol
-    def duplicable?
-      false
-    end
-  end
-end
-
-class Numeric
-  begin
-    1.dup
-  rescue TypeError
-
-    # Numbers are not duplicable:
-    #
-    #  3.duplicable? # => false
-    #  3.dup         # => TypeError: can't dup Integer
-    def duplicable?
-      false
-    end
-  end
-end
-
-require "bigdecimal"
-class BigDecimal
-  # BigDecimals are duplicable:
-  #
-  #   BigDecimal("1.2").duplicable? # => true
-  #   BigDecimal("1.2").dup         # => #<BigDecimal:...,'0.12E1',18(18)>
-  def duplicable?
-    true
-  end
-end
-
 class Method
   # Methods are not duplicable:
   #
@@ -127,33 +38,3 @@ class Method
     false
   end
 end
-
-class Complex
-  begin
-    Complex(1).dup
-  rescue TypeError
-
-    # Complexes are not duplicable:
-    #
-    #   Complex(1).duplicable? # => false
-    #   Complex(1).dup         # => TypeError: can't copy Complex
-    def duplicable?
-      false
-    end
-  end
-end
-
-class Rational
-  begin
-    Rational(1).dup
-  rescue TypeError
-
-    # Rationals are not duplicable:
-    #
-    #   Rational(1).duplicable? # => false
-    #   Rational(1).dup         # => TypeError: can't copy Rational
-    def duplicable?
-      false
-    end
-  end
-end